Figure 2From: Development of a Fur-dependent and tightly regulated expression system in Escherichia colifor toxic protein synthesisP fhuA modified strategies used in this study. Continuous line frame, -35 or −10 region; dash line frame, Fur binding box; PfhuA, fhuA promoter; TT, transcriptional terminator rrnBT1T2 derived from the rrnB rRNA operon of E. coli.Back to article page